Our facial roller massager is carefully crafted from zinc alloy and plastic PP. It is specially designed to support temperature adjustment by being placed in the refrigerator for cold storage or soaking in warm water. You can choose between cold compress and warm compress modes according to your needs. The usage method is extremely convenient: 1. For soothing and reducing swelling refrigerate for 1-2 hours (do not freeze). For relaxing muscles soak in warm water at 38-40 for 5-10 minutes dry and set aside. 2. Hold the anti-slip grip and gently roll the skin around your face and eyes from the inside out and from the bottom up. 3. After use rinse the roller with clean water dry it and after being refrigerated or treated with warm water it can maintain a stable temperature continuously providing a long-term temperature control experience for facial massage. It is equipped with an anti-slip handle design allowing for easy and precise control of the rolling direction and stimulating blood circulation in the face during massage.